Quadratic Equations and Functions Review

Algebraically determine the vertex of the function

• (4, -2)

• (-4, 14)

• (2, 0)

• (8, 6)

What do you do to the b value to correctly complete the square?

• square it
• divide it by 2 and square the result
• divide it by 2 and take the square root of the result
• divide it by 2 only

Tags

CCSS.HSA-REI.B.4B

Solve by completing the square.
 $x^2-8x-20=0$  

•  $x=\left\{-2,\ 10\right\}$  

•  $x=\left\{-10,\ 2\right\}$  

•  $x=\left\{-20,\ -8\right\}$  

•  $x=\left\{8,\ 20\right\}$  

Tags

CCSS.HSA-REI.B.4B

Solve by completing the square.
 $x^2-4x-20=0$  

•  $x=\left\{\pm6\sqrt{2}-2\right\}$  

•  $x=\left\{\pm6\sqrt{2}+2\right\}$  

•  $x=\left\{\pm2\sqrt{6}+2\right\}$  

•  $x=\left\{\pm2\sqrt{6}-2\right\}$  

Tags

CCSS.HSA-REI.B.4B

Solve by completing the square.
 $x^2-6x-27=0$  

•  $x=\left\{-9,\ -3\right\}$  

•  $x=\left\{-3,\ 9\right\}$  

•  $x=\left\{-9,\ 3\right\}$  

•  $x=\left\{3,\ 9\right\}$  

Tags

CCSS.HSA-REI.B.4B

Solve by completing the square.
 $x^2-14x-15=0$  

•  $x=\left\{1,\ 15\right\}$  

•  $x=\left\{-15,\ -1\right\}$  

•  $x=\left\{-15,\ 1\right\}$  

•  $x=\left\{-1,\ 15\right\}$  

Tags

CCSS.HSA-REI.B.4B

In the compound interest formula A=P(1+r)^t what does the A stand for?

• The amount of interest

• The total amount

• The interest rate

• The time

Jacob borrows $500 from Abraham and agrees to have the loan compounded annually for 5 years with an interest rate of 2.5%. How much will the total amount be that Jacob owes?

• $565.70

• $262609.38

• $65.70

• $630.20

Hei-Hei has $1500 in a retirement account earning 5% interest compounded annually. After 5 years how much does Hei-Hei have in the account?

• $1750

• $2010.14

• $2500

• $1914.42

Tags

CCSS.HSF-LE.A.1C

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3